I didn't really take much pictures. I drew a little diagram on how to do it. Hopefully it helps.

Assuming you are wired off a relay. This is what it should look like.
Your ballast to your lights has male and female connectors, on the Positive and Negative coming off the ballast and lights.

Cut the connectors off (cut them as close to the connectors as possible so you will have alot of wire to work with.)

Now take apart your hella 4000, remove the old light bulb and install your HID bulb (h1). inside the die cast housing you will see your old plug for the halogen bulb. it should be brown and white, cut the ends off and strip them.Brown is Negative and White is Positive

after you installed your bulb into the housing, start soldering. you want to solder the Brown to Black and White To Red, after soldering either shrink wrap any exposed metal on the wire or electrical tape it. when you are done re assemble the lamp.

Now, granted that you already have the ballast connectors cut and stripped take the Hella harness and strip the blue and brown wire.
The Blue is Positive and Brown is Negative.

Solder the Red to Blue and Brown to Black. once done shrink wrap or electrical tape any exposed metal on the wires.

Now everything is ready to go, your ballast are in a secure spot, go out and enjoy your lights.

I got them from a friend, I recommend DDM ballast (ddmtuning.com) I got 6k it has a blue tint to them, they suck in dust, rain and fog. If I had to do it again I would get 4500 for the outside and 3k for the inside.

Thanks! I used this to convert my three 4000s to 55w HID. For some reason the third light doesn't fire everytime. It'll flash but not fire occasionally. I swapped the bulb and ballast with a working spare and it still happens. I'm guessing I need more amps for the DDM 55w ballasts. Still gotta figure that out.

Just wanted to make others aware that this is not a good idea. I contacted the OP and this thread has been destickied. Anyways, the reason being that HIDs can reach as high as 20,000 Volts during startup. The wiring from the ballast to the bulb is specifically made to hold off high voltages. The original wiring in these lights is not intended for high voltages. This will cause arcing during startup of the HID system and possible fire, explosion, or other hazardous things to happen. Always keep the wiring from the ballast to the bulb in an HID system intact. If you need to make them longer, you should purchase wire extensions intended for this purpose.